I sincerely doubt that whatever you watch causes him physical, emotional and psychological duress equivalent to what you would experience from PTSD triggers. I doubt your television choices give him nightmares, raise his heart rate, or cause panic attacks. His suggestion that there's a parallel between trauma and "not liking what you watch", is reprehensible. He needs to be educated about trauma disorders, and to stop being so cavalier about his remarks.
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I never give you my number, I only give you my situation.
Beatles